Data/hora: 09/06/2024 16:57:29

Provedor de dados: 	91	
País: 	Brazil	
Título: 	Abrasive effects of sediments on impellers of pumps used for catching raw water	
Autores: 	Serrano,Rodrigo O. P.; Castro,Ana L. P. de; Rico,Edwin A. M.; Pinto,Maria A.; Viana,Edna M. de F.; Martinez,Carlos B.	
Data: 	2018-09-01	
Ano: 	2018	
Palavras-chave: 	Abrasive wear; Micro abrasion; Sediment concentration.	
Resumo: 	ABSTRACT This study presents an analysis of the abrasive effects of sediments from the bed of the Acre River, Brazil, on the wear of three different ferrous materials employed in the manufacture of impellers of centrifuge pumps used to catch raw water. In order to evaluate the abrasive wear and specific wear coefficient (k) as a function of sediment concentration, tests were conducted in samples of SAE 8620 steel, nodular cast iron and gray cast iron by using a rotary-ball abrasion meter. These tests employed abrasive slurry with concentration of 1, 2, 3, 5 and 10 g L-1 of sediments in distilled water. The volume of worn material as a function of the relative velocity of water flow in relation to the impeller blades was mathematically estimated. The experimental results showed that: i) The semi-angular and semi-rounded shapes of the sediments from the Acre River produced evidence of micro-grooving and plastic deformation in the three metallic alloys; ii) SAE 8620 steel showed higher resistance to abrasive wear than samples of gray and nodular cast iron; iii) the increase in the volume of worn material due to increment in sediment concentration and the relative velocity of the mixture (water + sediment) to the rotor pads.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000900591	
Editor: 	Departamento de Engenharia Agrícola  - UFCG	
Relação: 	10.1590/1807-1929/agriambi.v22n9p519-596	
Formato: 	text/html	
Fonte: 	Revista Brasileira de Engenharia Agrícola e Ambiental  v.22 n.9 2018	
Fonte: 	info:eu-repo/semantics/openAccess